SALT YOUR SILVER
Silver cleaners can be abrasive and harsh. Make your own cleaner for sterling (not plate) silver by mixing 560 ml (1 pint) of water with a teaspoon each of salt and baking powder and adding a strip of aluminum foil. Drop the silver into this mixture, boil for a few minutes, remove with thongs and polish with a soft cloth. Add lemon juice for really grimy silver.
Source: 1001 Little Ways To Save Our Planet by Esme Floyd
Nice one isn't it? Let's all share in the green bandwagon and S.O.A.P...Save Our Amazing Planet one step at a time.